<template>
  <div class="goods-comment">
    <div class="head" v-if="commentInfo">
      <div class="data">
        <p><span>{{commentInfo.salesCount}}</span><span>人购买</span></p>
        <p><span>{{commentInfo.praisePercent}}</span><span>好评率</span></p>
      </div>
      <div class="tags">
        <div class="dt">大家都在说：</div>
        <div class="dd">
          <a v-for="(item,i) in commentInfo.tags" :key="item.title" href="javascript:;" :class="{active:currTagIndex===i}" @click="changeTag(i)">
            {{item.title}} ({{item.tagCount}})
          </a>
        </div>
      </div>
    </div>
    <div class="sort" v-if="commentInfo">
      <span>排序：</span>
      <a @click="changeSort(null)" :class="{active:reqParams.sortField===null}" href="javascript:;">默认</a>
      <a @click="changeSort('createTime')" :class="{active:reqParams.sortField==='createTime'}" href="javascript:;">最新</a>
      <a @click="changeSort('praiseCount')" :class="{active:reqParams.sortField==='praiseCount'}" href="javascript:;">最热</a>
    </div>
    <div class="list">
      <div class="item" v-for="item in commentList" :key="item.id">
        <div class="user">
          <img :src="item.member.avatar" alt="">
          <span>{{formatNickName(item.member.nickname)}}</span>
        </div>
        <div class="body">
          <div class="score">
            <i v-for="i in item.score" :key="i + 's'" class="iconfont icon-wjx01"></i>
            <!-- <i v-for="i in 5-item.score" :key="i + 'k'" class="iconfont icon-wjx01"></i> -->
            <span class="attr">{{formatSpecs(item.orderInfo.specs)}}</span>
          </div>
          <div class="text">{{item.content}}</div>
          <!-- 使用图片预览组件 -->
          <GoodsCommentImage v-if="item.pictures.length" :pictures="item.pictures" />
          <div class="time">
            <span>{{item.createTime}}</span>
            <span class="zan"><i class="iconfont icon-dianzan"></i>{{item.praiseCount}}</span>
          </div>
        </div>
      </div>
    </div>
    <!-- 分页组件 -->
    <TiziPagination @current-change="changePager" :total="total" :current-page="reqParams.page" />
  </div>
</template>

<script>
import {findGoodsCommentInfo,findGoodsCommentList} from '@/api/product'
import {inject, reactive, ref, watch} from 'vue'
import GoodsCommentImage from './goods-comment-image.vue'
export default {
    name:'GoodsComment',
    components: {GoodsCommentImage},
    props : {
        goods : {
            type:Object,
            default:() => {}
        }
    },
    setup (props) {
        // 获取评价信息
        const commentInfo = ref(null)
        const goods = inject('goods')
        
        findGoodsCommentInfo(goods.value.id).then(data => {
            // type的目的是将来点击可以区分点的是不是标签
            data.result.tags.unshift({type:'img', title:'有图', tagCount:data.result.hasPictureCount})
            data.result.tags.unshift({type:'all', title:'全部评价', tagCount:data.result.evaluateCount})
            commentInfo.value = data.result
        })
        // const commentInfo = getCommentInfo(props)
        // 记录当前激活的索引
        const currTagIndex = ref(0)
        const changeTag = (i) => {
          currTagIndex.value = i
          // 点击tag的时候修改筛选条件
          const tag = commentInfo.value.tags[i]
          // 情况1：全部评价
          // 情况2：有图
          // 情况3：正常tag
          if (tag.type === 'all') {
            reqParams.hasPicture = null
            reqParams.tag = null
          } else if (tag.type === 'img') {
            reqParams.hasPicture = true
            reqParams.tag = null
          } else {
            reqParams.hasPicture = null
            reqParams.tag = tag.title
          }
          // 重置页码1
          reqParams.page = 1
        }

        // 准备筛选条件数据
        const reqParams = reactive({
          page: 1,
          pageSize: 10,
          hasPicture: null,
          tag: null,
          // 排序方式：praiseCount 热度  createTime 最新
          sortField: null
        })

        // 改变排序
        const changeSort = (type) => {
          reqParams.sortField = type
          reqParams.page = 1
        }

        // 初始化需要发请求，筛选条件发生改变发请求
        const commentList = ref([])
        const total = ref(0)
        watch(reqParams, () => {
          findGoodsCommentList(goods.value.id, reqParams).then(data => {
            commentList.value = data.result.items
            total.value = data.result.counts
          })
        }, { immediate: true })

        
        // 定义转换数据的函数
        const formatSpecs = (specs) => {
          return specs.reduce((p,c) => `${p} ${c.name}: ${c.nameValue}`,'').trim()
        }
        const formatNickName = (nickname) => {
          return nickname.substr(0,1) + '****' + nickname.substr(-1)
        }

        // 改变分页函数
        const changePager = (np) => {
          reqParams.page = np
        }
        
        return {commentInfo,currTagIndex,changeTag,changeSort,reqParams,commentList,formatSpecs,formatNickName,changePager,total}
    }
}
</script>

<style lang="less" scoped>
.goods-comment {
  .head {
    display: flex;
    padding: 30px 0;
    .data {
      width: 340px;
      display: flex;
      padding: 20px;
      p {
        flex: 1;
        text-align: center;
        span {
          display: block;
          &:first-child {
            font-size: 32px;
            color: @priceColor;
          }
          &:last-child {
            color: #999;
          }
        }
      }
    }
    .tags {
      flex: 1;
      display: flex;
      border-left: 1px solid #f5f5f5;
      .dt {
        font-weight: bold;
        width: 100px;
        text-align: right;
        line-height: 42px;
      }
      .dd {
        flex: 1;
        display: flex;
        flex-wrap: wrap;
        > a {
          width: 132px;
          height: 42px;
          margin-left: 20px;
          margin-bottom: 20px;
          border-radius: 4px;
          border: 1px solid #e4e4e4;
          background: #f5f5f5;
          color: #999;
          text-align: center;
          line-height: 40px;
          &:hover {
            border-color: @tiziColor;
            background: lighten(@tiziColor,50%);
            color: @tiziColor;
          }
          &.active {
            border-color: @tiziColor;
            background: @tiziColor;
            color: #fff;
          }
        }
      }
    }
  }
  .sort {
    height: 60px;
    line-height: 60px;
    border-top: 1px solid #f5f5f5;
    border-bottom: 1px solid #f5f5f5;
    margin: 0 20px;
    color: #666;
    > span {
      margin-left: 20px;
    }
    > a {
      margin-left: 30px;
      &.active,&:hover {
        color: @tiziColor;
      }
    }
  }
  .list {
    padding: 0 20px;
    .item {
      display: flex;
      padding: 25px 10px;
      border-bottom: 1px solid #f5f5f5;
      .user {
        width: 160px;
        img {
          width: 40px;
          height: 40px;
          border-radius: 50%;
          overflow: hidden;
        }
        span {
          padding-left: 10px;
          color: #666;
        }
      }
      .body {
        flex: 1;
        .score {
          line-height: 40px;
          .iconfont {
            color: #ff9240;
            padding-right: 3px;
          }
          .attr {
            padding-left: 10px;
            color: #666;
          }
        }
      }
      .text {
        color: #666;
        line-height: 24px;
      }
      .time {
        color: #999;
        display: flex;
        justify-content: space-between;
        margin-top: 5px;
      }
    }
  }
}
</style>